Contacts of the helix formed by residues 251 - 257 (chain C) in PDB entry 1UHG
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 GLY 251 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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246C PRO* 3.8 12.8 - - - +
248C GLU* 2.9 31.3 + - - +
250C SER* 1.3 77.7 - - - +
252C LEU* 1.3 63.4 + - - +
253C GLU 3.3 1.8 - - - -
254C GLN* 3.3 12.5 + - - +
255C LEU* 3.1 21.0 + - - +
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Residues in contact with LEU 252 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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246C PRO* 3.8 19.8 - - + +
249C VAL 5.3 0.2 + - - -
250C SER* 3.2 3.3 - - - -
251C GLY* 1.3 75.1 - - - +
253C GLU* 1.3 74.8 + - - +
255C LEU* 3.1 6.0 + - + -
256C GLU* 2.9 39.5 + - + +
363C PRO* 3.4 44.0 - - + +
364C PHE* 4.2 3.6 - - - +
365C LEU* 3.8 29.2 - - + -
381C ARG* 3.7 31.0 - - + +
383C VAL* 4.5 2.7 - - + -
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Residues in contact with GLU 253 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23C ALA* 5.7 3.8 - - - +
24C ASN* 4.8 14.7 + - - +
250C SER 4.3 7.4 + - - +
251C GLY 3.3 1.0 - - - -
252C LEU* 1.3 84.7 - - - +
254C GLN* 1.3 62.9 + - - +
256C GLU* 3.2 16.8 + - - +
257C SER* 3.2 19.9 + - - -
381C ARG* 5.1 6.1 + - - -
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Residues in contact with GLN 254 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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225C GLU 6.0 1.8 - - - +
250C SER 5.3 0.4 + - - -
251C GLY* 3.3 13.2 + - - +
252C LEU 3.2 0.4 - - - -
253C GLU* 1.3 77.1 - - - +
255C LEU* 1.3 67.5 + - - +
257C SER* 2.6 32.6 + - - -
258C ILE* 3.5 27.1 + - + +
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Residues in contact with LEU 255 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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225C GLU* 5.0 8.3 - - + +
227C MET* 4.2 21.5 - - + -
244C LEU* 4.2 25.4 - - + +
246C PRO* 3.8 26.0 - - + -
251C GLY 3.1 13.7 + - - +
252C LEU* 3.1 11.2 + - + +
254C GLN* 1.3 77.7 - - - +
256C GLU* 1.3 63.5 + - - +
258C ILE* 3.3 6.4 + - + +
259C ILE* 3.1 23.4 + - + +
267C TRP* 3.7 28.7 - - + -
365C LEU* 4.3 21.1 - - + -
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Residues in contact with GLU 256 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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15C PHE* 3.6 17.1 - - + -
16C LYS* 4.9 4.0 + - - +
19C LYS* 3.5 34.2 + - - +
252C LEU* 2.9 40.7 + - + +
253C GLU* 3.5 15.4 - - - +
255C LEU* 1.3 79.1 - - - +
257C SER* 1.3 56.6 + - - +
258C ILE 3.2 3.9 + - - -
259C ILE* 3.7 19.0 + - - +
365C LEU* 3.6 14.4 - - + +
381C ARG* 2.8 44.9 + - - -
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Residues in contact with SER 257 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16C LYS* 5.6 3.6 - - - +
19C LYS* 4.8 4.7 - - - +
253C GLU 3.2 8.6 + - - -
254C GLN* 2.6 38.4 + - - -
256C GLU* 1.3 75.7 - - - +
258C ILE* 1.3 63.8 + - - +
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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