Contacts of the helix formed by residues 248 - 257 (chain A) in PDB entry 2MWI
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ASP 248 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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242A TYR* 3.2 11.7 + - - +
244A ALA* 5.1 0.7 - - - -
245A ASP* 3.4 23.5 + - - +
247A GLN* 1.3 79.5 - - - +
249A LYS* 1.3 65.7 + - - +
250A HIS 2.9 2.7 - - - -
251A TRP* 2.8 30.9 + - + +
252A LEU* 3.0 19.4 + - + +
303A MET* 3.1 26.2 - - - +
306A LYS* 2.9 45.7 - - - +
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Residues in contact with LYS 249 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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244A ALA* 5.0 5.2 - - + +
245A ASP 3.0 18.3 + - - +
246A PRO* 3.9 15.7 + - + +
247A GLN 3.4 0.2 - - - -
248A ASP* 1.3 76.5 - - - +
250A HIS* 1.3 55.0 + - - +
252A LEU* 3.8 14.1 - - + +
253A ALA* 2.8 47.3 + - + +
259A ARG* 4.6 26.2 - - + +
260A ALA 5.2 9.2 - - - -
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Residues in contact with HIS 250 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
246A PRO 4.2 3.8 + - - +
247A GLN* 3.5 16.4 + - - +
248A ASP 2.9 0.4 + - - -
249A LYS* 1.3 81.9 - - - +
251A TRP* 1.3 72.4 + + + +
253A ALA* 3.6 10.3 - - - +
254A GLU* 3.5 25.2 + - + +
259A ARG* 4.4 22.6 + - - +
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Residues in contact with TRP 251 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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247A GLN* 3.8 23.7 + - + -
248A ASP* 2.8 46.6 + - + -
250A HIS* 1.3 83.1 - + + +
252A LEU* 1.3 65.4 + - - +
253A ALA 3.1 1.6 - - - -
254A GLU* 2.9 30.0 + - - +
255A GLN* 3.5 8.4 + - - +
300A PRO* 5.3 7.2 - - + -
302A TRP* 5.0 14.6 - + + -
303A MET* 4.0 33.2 - - + -
306A LYS* 3.9 21.8 - - + -
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Residues in contact with LEU 252 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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215A LEU* 3.9 16.6 - - + +
244A ALA* 3.5 33.0 - - + -
248A ASP* 3.0 29.0 + - + +
249A LYS* 3.8 8.5 - - + +
251A TRP* 1.3 75.5 - - - +
253A ALA* 1.3 53.1 + - - +
255A GLN* 2.9 10.9 + - + +
256A HIS* 2.8 36.2 + - - +
268A LEU* 3.7 29.8 - - + -
297A PHE* 4.3 12.8 - - + -
303A MET* 3.6 24.2 - - + -
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Residues in contact with ALA 253 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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249A LYS* 2.8 33.5 + - + +
250A HIS* 3.6 9.2 - - - +
251A TRP 3.1 0.2 - - - -
252A LEU* 1.3 72.8 - - - +
254A GLU* 1.3 54.0 + - + +
256A HIS* 4.4 5.8 - - - -
257A HIS* 2.8 31.7 + - - -
258A MET 3.8 10.7 + - - +
259A ARG* 5.0 19.5 - - + +
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Residues in contact with GLU 254 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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250A HIS* 3.5 25.8 + - + +
251A TRP* 2.9 19.6 + - - +
253A ALA* 1.3 77.3 - - + +
255A GLN* 1.3 67.8 + - + +
257A HIS* 3.8 14.7 + - - +
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Residues in contact with GLN 255 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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215A LEU* 5.3 4.7 - - + -
251A TRP 3.5 8.5 + - - +
252A LEU* 2.9 11.5 + - + +
254A GLU* 1.3 82.3 - - + +
256A HIS* 1.3 62.2 + - - +
257A HIS* 4.7 2.5 - - - +
295A LYS* 4.6 14.7 + - - +
297A PHE* 4.2 48.1 - - + +
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Residues in contact with HIS 256 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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215A LEU* 3.6 28.5 - - + +
217A SER* 3.3 37.6 + - - -
218A ARG* 5.4 2.8 - - - +
252A LEU* 2.8 17.6 + - + +
253A ALA* 4.0 3.1 - - - +
255A GLN* 1.3 77.1 - - - +
257A HIS* 1.3 72.6 - - - +
258A MET* 3.0 47.4 + - + +
260A ALA* 5.5 5.4 - - + -
295A LYS* 4.6 13.3 + - + +
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Residues in contact with HIS 257 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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253A ALA 2.8 13.2 + - - -
254A GLU* 3.8 11.0 + - - +
255A GLN 3.4 3.4 - - - +
256A HIS* 1.3 80.6 - - - +
258A MET* 1.3 64.1 + - - +
295A LYS* 5.8 2.5 - - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il