Contacts of the helix formed by residues 253 - 258 (chain P) in PDB entry 3H1J
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 253 (chain P).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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132P TYR* 4.3 18.3 + - - +
139P MET* 3.0 31.3 - - + +
249P ASN* 6.3 0.2 - - - -
251P LEU 4.3 0.4 + - - -
252P GLY* 1.3 70.9 - - - -
254P PRO* 1.3 73.5 - - - +
255P GLU* 2.5 39.1 + - - +
256P ASN* 3.6 13.7 + - - +
257P PHE* 4.4 7.7 - - - -
268P HIS 5.0 1.0 - - - +
270P LYS* 3.9 14.3 + - - +
121Q HIS* 4.7 4.4 - - - -
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Residues in contact with PRO 254 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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249P ASN* 6.4 1.8 - - + -
252P GLY 3.6 5.8 - - - +
253P ASP* 1.3 89.5 - - - +
255P GLU* 1.3 63.2 + - - +
256P ASN 3.1 3.0 + - - -
257P PHE* 3.3 16.8 + - + -
118Q ASN* 2.9 32.7 - - - +
119Q ALA* 3.3 17.8 - - - +
120Q ARG 4.5 4.3 - - - +
121Q HIS* 3.4 47.3 - - + +
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Residues in contact with GLU 255 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
138P GLN* 3.5 15.1 - - + +
139P MET* 3.9 20.2 - - + -
253P ASP* 2.5 26.9 + - - +
254P PRO* 1.3 74.7 - - + +
256P ASN* 1.3 55.0 + - - +
257P PHE 3.1 4.8 + - - -
258P THR* 3.5 20.0 + - - +
266P PRO* 3.5 40.8 - - + +
267P PRO* 4.9 4.2 - - - +
268P HIS* 3.7 11.9 + - - +
119Q ALA 4.9 6.1 - - - +
121Q HIS* 5.8 2.9 - - + -
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Residues in contact with ASN 256 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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64P PHE* 4.1 0.2 - - - -
81P ARG* 5.9 0.4 - - - +
132P TYR* 3.7 24.5 - - + +
135P PRO* 4.5 7.1 - - - +
137P GLY* 3.2 12.4 - - - +
138P GLN 4.3 1.1 - - - +
139P MET* 2.7 44.3 + - + +
140P SER* 2.8 26.7 + - - -
253P ASP 3.6 11.3 + - - +
254P PRO 3.1 1.4 - - - -
255P GLU* 1.3 78.1 - - - +
257P PHE* 1.3 59.9 + - + +
258P THR 3.2 5.3 + - - -
501P HEM 5.5 1.0 + - - -
3011P GOL 2.8 31.2 + - - -
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Residues in contact with PHE 257 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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64P PHE* 3.4 20.7 - + - -
249P ASN* 3.8 27.6 - - + -
253P ASP 4.4 6.1 - - - -
254P PRO* 3.6 19.7 - - + +
255P GLU 3.1 2.4 - - - -
256P ASN* 1.3 80.6 - - - +
258P THR* 1.3 61.2 + - - +
259P PRO* 3.6 2.9 - - - +
3011P GOL 3.6 33.0 - - - -
115Q TYR* 3.8 39.5 - + + +
118Q ASN* 3.3 45.1 - - + -
119Q ALA* 3.8 18.7 - - + +
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Residues in contact with THR 258 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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137P GLY* 3.2 2.3 - - - -
138P GLN* 2.5 49.4 + - + +
255P GLU* 3.7 21.0 + - - +
256P ASN 3.2 0.2 - - - -
257P PHE* 1.3 82.7 + - - +
259P PRO* 1.3 73.1 - - + +
261P ASN* 5.9 1.8 - - + -
119Q ALA* 4.3 14.0 + - - +
120Q ARG* 4.6 6.8 + - - -
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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