Contacts of the strand formed by residues 226 - 230 (chain A) in PDB entry 3MNX
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 THR 226 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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160A LEU* 4.3 2.0 - - - +
182A CYS* 3.3 4.0 - - - -
183A ALA 3.0 36.1 + - - -
185A GLY 4.8 0.4 - - - +
189A SER* 3.7 12.7 - - - -
190A GLY* 3.0 29.1 + - - +
213A THR* 4.1 18.2 - - + -
215A PHE 3.9 6.3 - - - +
216A VAL* 4.0 21.2 - - + +
220A CYS 5.2 0.2 + - - -
224A LYS 3.6 0.8 + - - -
225A PRO* 1.3 73.1 - - - +
227A VAL* 1.3 61.7 + - - +
228A PHE* 3.4 28.6 - - + -
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Residues in contact with VAL 227 (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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172A TRP* 3.5 34.8 - - + +
176A VAL* 4.0 8.3 - - + -
180A MET* 3.7 28.5 - - + -
181A VAL 3.6 4.5 - - - +
182A CYS* 5.0 3.8 - - + -
213A THR* 4.2 0.5 - - - -
214A SER* 2.9 22.9 + - - -
215A PHE* 2.9 62.6 + - + +
225A PRO 3.5 2.7 - - - +
226A THR* 1.3 75.3 - - - +
228A PHE* 1.3 65.0 + - - +
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Residues in contact with PHE 228 (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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138A ILE* 3.9 15.3 - - + -
160A LEU* 4.1 3.6 - - + -
180A MET* 3.1 8.9 - - - +
181A VAL* 2.8 47.0 + - + +
183A ALA* 3.9 17.0 - - + -
199A LEU* 3.7 43.5 - - + -
211A GLY* 3.8 15.3 - - - -
212A VAL 3.2 8.3 - - - +
213A THR* 3.2 38.4 - - - -
214A SER* 4.1 2.7 - - - +
226A THR* 3.4 37.2 - - + -
227A VAL* 1.3 75.8 - - - +
229A THR* 1.3 60.6 + - - +
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Residues in contact with THR 229 (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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100A GLY* 6.1 0.2 - - - -
101A TYR 5.4 0.4 - - - +
102A ASP* 2.8 43.6 + - - +
103A ILE* 4.3 12.1 - - + -
179A SER 4.0 4.9 - - - +
180A MET* 4.5 3.4 - - - +
211A GLY* 3.2 7.3 - - - -
212A VAL* 2.8 38.0 + - + -
214A SER* 4.0 5.8 - - - -
228A PHE* 1.3 72.2 - - - +
230A ARG* 1.3 63.7 + - - +
231A VAL* 3.3 2.2 + - - +
234A TYR* 3.4 35.9 - - + +
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Residues in contact with ARG 230 (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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127A GLY* 4.3 1.0 - - - -
128A THR 3.9 3.1 + - - -
129A ILE* 3.4 33.0 - - - +
178A ASN* 2.9 32.1 + - - +
179A SER* 2.9 23.2 + - - +
180A MET 4.0 3.3 + - - -
181A VAL* 3.7 25.4 - - + -
210A HIS* 3.7 6.7 - - - +
228A PHE 3.4 1.8 + - - -
229A THR* 1.3 68.3 - - - +
231A VAL* 1.3 65.5 + - - +
232A SER* 2.9 31.0 + - - +
233A ALA* 3.1 24.6 + - - +
234A TYR* 3.2 15.5 - - - -
290A SO4 2.8 44.5 + - - -
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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